# Copyright 2025 Google LLC
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#     http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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"""Base transformers for Google GenAI SDK."""
import base64

# Some fields don't accept url safe base64 encoding.
# We shouldn't use this transformer if the backend adhere to Cloud Type
# format https://cloud.google.com/docs/discovery/type-format.
# TODO(b/389133914,b/390320301): Remove the hack after backend fix the issue.
def t_bytes(data: bytes) -> str:
  if not isinstance(data, bytes):
    return data
  return base64.b64encode(data).decode('ascii')